摘要
以江苏启东某海上风电场为工程背景,采用数值模拟的方法,分析了海水腐蚀对大直径单桩基础的桩身挠度和桩身最大应力造成影响的规律。结果表明,钢管桩均匀腐蚀数学模型中,腐蚀速率由低变高再降至较低水平;海水腐蚀导致单桩基础在30 a内桩顶最大挠度增加10%,桩身最大应力增加12%,且单桩桩顶相对挠度发展曲线和桩身相对最大应力发展曲线均与均匀腐蚀数学模型的腐蚀率曲线趋势基本一致。
Taking an offshore wind farm in Qidong,Jiangsu Province as the engineering background,the numerical simulation is used to analyze the influence of seawater corrosion on pile deflection and maximum stress of the large-diameter single pile.The results show that the corrosion rate in the mathematical model of uniform corrosion of steel pipe piles changes from low to high and then to a lower level,and the seawater corrosion causes the maximum deflection of single pile top to increase by 10%and the maximum stress of the pile body to crease by 12%within 30 years.In addition,the development curve of the relative deflection of single pile top and the development curve of the relative maximum stress of pile body are basically consistent with the trend of the corrosion rate curve of the uniform corrosion mathematical model.
作者
许海波
王欣怡
陈凤云
XU Haibo;WANG Xinyi;CHEN Fengyun(PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,Zhejiang,China;Zhejiang East China Engineering Consulting Co.,Ltd.,Hangzhou 311122,Zhejiang,China;Ocean College,Zhejiang University,Zhoushan 316021,Zhejiang,China)
出处
《水力发电》
CAS
2021年第12期80-83,共4页
Water Power
基金
中国电建集团华东勘测设计研究院有限公司科技项目(KY2020-ZX-19)。
关键词
海上风电
钢管单桩
均匀腐蚀模型
水平承载特性
数值模拟
offshore wind power
single steel pipe pile
uniform corrosion model
horizontal bearing characteristic
numerical simulation
